EP2462856A1 - Lave-vaisselle à plateau - Google Patents
Lave-vaisselle à plateau Download PDFInfo
- Publication number
- EP2462856A1 EP2462856A1 EP10015370A EP10015370A EP2462856A1 EP 2462856 A1 EP2462856 A1 EP 2462856A1 EP 10015370 A EP10015370 A EP 10015370A EP 10015370 A EP10015370 A EP 10015370A EP 2462856 A1 EP2462856 A1 EP 2462856A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- door
- tub
- dishwasher
- push button
- switching means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0089—Washing or rinsing machines for crockery or tableware of small size, e.g. portable mini dishwashers for small kitchens, office kitchens, boats, recreational vehicles
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4251—Details of the casing
- A47L15/4257—Details of the loading door
- A47L15/4259—Arrangements of locking or security/safety devices for doors, e.g. door latches, switch to stop operation when door is open
Definitions
- the present invention relates to a table top dishwasher, that is to a compact dishwasher which in contrast to common built-in devices is designed to be placed on top of a kitchen worktop or which can be used as a portable device.
- a widely used switching means for sensing the closed position of the door comprises a striker that is provided at the door which in the fully closed position of the door engages a catcher which is provided in the fixed portion of the door lock.
- a standard push button switch can be employed similarly as was done in known built-in dishwashers wherein the switching means was provided as part of the door lock arrangement, wherein however in accordance with the present invention the activation of the push button switch is effected magnetically, i.e. rather than using a reed switch or hall sensor a standard electro-mechanical switch is used in which the mechanic force for displacement of the push button is provided by a magnetic activation element. While both the first and the second activation elements can be magnets, also only one of the first and the second activation elements can be a magnet, whereas the respective other activation element comprises a ferromagnetic element, such as a block made of iron or an iron containing alloy.
- the electric push button switch despite being provided in proximity to the water-filled tub, can be provided in a region of the dishwasher which cannot be reached by water from within the tub, such as within an hermetically sealed housing provided in the tub, or outside the tub in a housing region between the exterior side of the washing tub and the interior side of the outer dishwasher housing.
- the door can comprise at least along one of its edges a sealing surface which in the closing position engages an upper rim of the tub.
- the door which carries the second activation element can be designed to directly engage the upper rim of the tub, wherein in order to prevent escape of water a sealing is provided at the engaging surfaces.
- resilient sealings such as profiled rubber sealings, could be provided both at the and the upper rim of the tub, for ease of construction it is preferred that only one of the mating sealing surfaces is a resilient sealing surface whereas the respective other sealing surface is a rigid surface of the respective component.
- the dishwasher can comprise a lower housing section containing the tub and a door which is a hood-shaped member which is hingedly connected to the lower housing section and which in the closing position sealingly engages the upper rim of the lower housing section.
- the hood-shaped door thus could be hingedly connected to the upper rim of the tub, such as by providing for hinges along the rear edge of the tub
- the door also can be designed so as to engage only a portion of the upper rim of the tub, for example the upper rim of the front wall of the tub, wherein the door hinges are provided in a rear portion of the dishwasher at a housing section that is raised with respect to the upper rim of the tub.
- the hood-shaped door also can be hingedly connected to the tub or the lower housing section by means of levers which are pivotably connected to the door and the lower housing section of the dishwasher.
- the cover member which forms a watertight hood over the tub comprises a fixed section that is connected to the tub, wherein the door is hingedly or rotatably connected to the fixed section.
- the fixed section of the cover member can comprise two fixed sidewall members which are connected to a fixed central member which covers a part of the central region of the tub, wherein the door covers the remaining part of the central region of the tub.
- the door can be hingedly connected to the fixed section, for example by hinges which are provided at the said fixed central region, or can be rotatably connected to the fixed section, for example by rotatably connecting the door to the fixed sidewall members.
- the switching means comprises a pivotable lever which at a first position engages the push button and which at a second position carries the first activation element.
- the first activation element can comprise a plunger which is arranged so as to be movable substantially in a direction parallel to the path of movement of the push button.
- the first activation element can comprise a magnetic or ferromagnetic plunger that is received within a sleeve which is perceptible to a magnetic field, such as a plastic sleeve, which plunger is located to engage either the push button of the electric switch as such as or a pivotable lever which engages the push button.
- standard push button switches can be used which thus need not to be modified for use in a dishwasher made in accordance with the present invention.
- the spring-biased push button switch can be provided with its own watertight housing so as to be arranged within or close to the tub, in preferred embodiments the switch is located in a housing section at the exterior side of the tub, which further facilitates the design and manufacturing of the dishwasher.
- the spring-biased push button can be located at the exterior side of a front or sidewall of the tub, or, in embodiments in which the tub has a double walled side or front wall within such side or front wall.
- control means can be adapted to restart operation of the dishwasher when the switching means detects that the door has reached its fully closed position, wherein such restart can be triggered automatically or an input request can be transmitted to the user, such as by an optic or acoustic signal so as to prompt the user to manually restart operation of the dishwasher.
- the electric switching means assumes a first switching condition when the door is in the closed position and assumes a second switching condition as soon as the door leaves the closed position. While such first and second switching conditions thus can be employed to control operation of the dishwasher in dependency of whether or not the door is in the fully closed position, the electric switching means further can be adapted to assume a third switching condition when the door is in an opened position in which it provides access to the tub. In this manner, the operation of the dishwasher or components thereof can be controlled in dependency of the position of the door on its path between the position when the door has left the fully closed position until it reaches the fully opened position.
- the circulation pump is shut off as soon as it is detected that the door has left the fully closed position so as to prevent water from leaking from the machine to the exterior.
- the signal provided by the electric switching means can be used to switch on the interior light of the dishwasher so as to illuminate the interior of the dishwasher, which interior light is maintained in the inactivated position for small opening angles of the door.
- Fig. 1 shows a table top dishwasher comprising a tub 10 and a cover member 12, which forms a hood over tub 10.
- Cover member or hood 12 is a generally cylindrical member comprising a fixed hood portion 14 and a rotatable door 16.
- Door 16 is rotatably supported at substantially semi-circular side portions 18 of the fixed hood portion so as to be pivotable about a horizontal axis 20.
- a basket 22 which comprises a plurality of holders 24 for accommodating and fixing during a washing cycle a plurality of articles to be cleaned.
- cover member 12 is a generally cylindrical or semi-cylindrical part, wherein approximately half of the arcuate surface shell is provided by the central region 15 of fixed hood portion 14 and the other half thereof is provided by central region 30 of door 16.
- Door 16 is rotatable about axis 20 between the opened position shown in Fig. 1 and a closed position which is reached by rotating door 16 in a counterclockwise direction in Fig. 1 until the lower edge 34 of door 16 contacts a respective sealing surface provided at tub 10.
- central region 15 of fixed hood portion 14 comprises a rim 32 which projects radially downwards into the gap between central region 15 and rotatable door 16.
- a top seal 40 extends along the rear side of rim 32 to engage a sealing surface which is provided at the rear or top edge of rotatable door 16 and which is formed by a rim 38 that projects radially outwards along the edge of door 16.
- a rim 42 extends along the lower edge 34 of rotatable door 12 at the interior side thereof, so as to provide for an abutment surface which upon closing door 16 engages a bottom seal 44 which extends along the upper front edge of washing tub 10.
- door 16 further comprises a handle 50 which facilitates closing of the door and which at the same time provides for a stop which delimits rotation of door 16 at the fully opened position shown in Fig. 1 .
- a catch member 54 which in the closed position of the door is received within a corresponding recess 56 provided at the front wall of tub 10, wherein a latch provided within recess 56 maintains the door in the closed position during operation of the dishwasher.
- the latch within recess 56 comprises a spring biased member which when closing door 16 engages catch member 54 and which can be released by pressing a knob 58.
- side seals 36 extend in proximity to the front edge of the semi-circular side portions 18 of fixed hood portion 14.
- door 16 contacts with its interior side the side seals 36, wherein the outermost regions of the interior side of door 16 thus forms abutment surfaces 46 for engagement of side seal 36.
- pivot arms 48 by which rotatable door 16 is pivotably hinged to be rotatable about axis 20 are provided with a bend portion 52 which contacts the inner face of door 16 at a distance from the lateral edge.
- the dishwasher is equipped with an electrical switching means for detecting whether or not door 16 has reached the fully closed position, which switching means comprises a push button switch 71 which is provided close to the front upper edge of tub 10 and which will be explained in further detail below by reference to Figs. 3 and 4 .
- switching means comprises a push button switch 71 which is provided close to the front upper edge of tub 10 and which will be explained in further detail below by reference to Figs. 3 and 4 .
- push button switch 71 is provided in a housing region between the exterior side of tub 10 and the interior side of the front housing wall 64 of the dishwasher, switch 71 is effectively protected against contact with water that is circulated within tub 10 or within the interior of cover member 12 during operation of the dishwasher.
- Switch 71 is a spring-biased push button switch, in which a first activation element 78 (shown in Figs. 3 and 4 ) is associated to the push button.
- a second activation element 62 is provided at the door close to its front edge. At least one of the first and second activation elements is magnetic whereas the respective other one of the two activation elements either is also a magnet or is made of a ferromagnetic material.
- the second activation element 62 approaches the first activation element of switch 78, wherein due to the proximity of the first and second activation element a magnetic force is created between these two elements which magnetic force is used to change the switching condition of switch 71.
- Fig. 2 further schematically shows a control unit 66 to which push button switch 71 is connected.
- Control unit 66 controls the various components of the dishwasher such as a water supply, a circulation pump 68 which supplies spray arm 25 with water, heating means 70 for heating the water to circulation pump 68, an interior light for illuminating the interior of hood 12, display member 28, and the like.
- Switch 71 is a push button switch comprising a spring-biased push button 72 which in the released state projects upwardly from the housing of switch 71 and which when depressed provides for a change of the switching condition of switch 71.
- a lever 74 is connected to switch 71 at a pivot point 76 so that lever 74 when pressed down activates push button 72.
- lever 74 At its free end lever 74 carries an activation element 78 which in the above description has been referred to as first activation element.
- At least one of the first activation element 78 and the second activation element 62 comprises a magnetic material, whereas the respective other activation element comprises likewise a magnetic material or a ferromagnetic material. In this manner, a magnetic force is created when the second activation element 62 approaches the first activation element 78.
- the materials of the first and second activation elements are selected such that a repulsive magnetive force is created when activation elements 62 and 78 approach each other.
- Activation elements 62 and 78 thus provide for a contact-less activation of switch 60 through a wall section 80 which in the embodiment shown in Fig. 2 is the upper edge of the front wall of tub 10.
- Fig. 4 shows an alternative embodiment of the switching arrangement shown in Fig. 3 .
- a similar spring-biased push button switch 71 is employed which changes its switching condition when push button 72 is depressed.
- lever 82 is a two-sided lever which is pivotable about a pivot point 84 so as to define a first lever arm 86 and a second lever arm 88.
- Lever arm 86 is aligned to engage push button 72 and lever arm 88 at its free end carries the first activation element 78.
- at least one of the two activation elements 62 and 78 comprises a magnetic material, in the embodiment shown in Fig.
- Fig. 4 there further is shown a stop 90 which supports lever arm 88 when door 16 is opened and hence no attractive force acts on first activation element 78.
- Figs. 5 to 7 there are shown variants of the dishwasher shown in Figs. 1 and 2 which differ from such embodiment in the design of the hood.
- the hood 12 has a fixed portion 14 in combination with a rotatable door 16
- the dishwasher comprises a lower housing section 92 which contains the tub and to which there is hingedly connected a hood 94.
- Hood 94 is connected to the lower housing section 92 by means of one or more hinges 96 which are provided at a rear wall or sidewall of the lower housing section, so that hood 94 can be tilted into an opened position in which it provides access to the tub.
- Fig. 7 shows a further variant in which the hood, similar as that shown in Fig. 1 comprises a fixed hood portion 14 that comprises two sidewall portions 18 which in the embodiment shown in Figs. 7 are substantially semicircular but which of course could have any other desired shape, as well as a central portion 15 which forms a roof over the rear portion of the tub.
- a tiltable door 102 is hingedly connected to the fixed hood portion 14 along one or more hinges 104 which connect the rear edge of door 102 with the front edge of the central region of fixed hood portion 14.
- Fig. 8 there is shown a further variant of the switching means 60 which differs from the embodiment shown in Fig. 3 in the design of the first activation element.
- the first activation element 78' is designed as a plunger which is received within a hollow housing section 106 which can be an integral part of a bottom or sidewall of tub 10.
- the attractive magnetive force between first activation element 78' and second activation element 62 will lift first activation element 78' so that the spring-biased push button 72 is released and thus lifts lever 74.
- the first activation element 78' needs not to be fixedly connected with lever 74 but rather can be designed as a separate part which only is engaged by lever 74.
Landscapes
- Washing And Drying Of Tableware (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10015370A EP2462856A1 (fr) | 2010-12-07 | 2010-12-07 | Lave-vaisselle à plateau |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10015370A EP2462856A1 (fr) | 2010-12-07 | 2010-12-07 | Lave-vaisselle à plateau |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2462856A1 true EP2462856A1 (fr) | 2012-06-13 |
Family
ID=43923616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10015370A Withdrawn EP2462856A1 (fr) | 2010-12-07 | 2010-12-07 | Lave-vaisselle à plateau |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2462856A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109674426A (zh) * | 2019-02-22 | 2019-04-26 | 珠海格力电器股份有限公司 | 家用电器门锁组件及洗碗机 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2063746A (en) * | 1930-11-03 | 1936-12-08 | Hobart Mfg Co | Washing machine |
US4114194A (en) * | 1976-04-22 | 1978-09-12 | Clairol, Inc. | Ultrasonic cleaner |
DE102006036551A1 (de) | 2006-08-04 | 2008-02-07 | Cherry Gmbh | Magnetsensorvorrichtung |
DE102006037494A1 (de) * | 2006-08-10 | 2008-02-21 | Emz-Hanauer Gmbh & Co. Kgaa | Türschließvorrichtung für ein elektrisches Haushaltsgerät, insbesondere eine Geschirrspülmschine |
-
2010
- 2010-12-07 EP EP10015370A patent/EP2462856A1/fr not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2063746A (en) * | 1930-11-03 | 1936-12-08 | Hobart Mfg Co | Washing machine |
US4114194A (en) * | 1976-04-22 | 1978-09-12 | Clairol, Inc. | Ultrasonic cleaner |
DE102006036551A1 (de) | 2006-08-04 | 2008-02-07 | Cherry Gmbh | Magnetsensorvorrichtung |
DE102006037494A1 (de) * | 2006-08-10 | 2008-02-21 | Emz-Hanauer Gmbh & Co. Kgaa | Türschließvorrichtung für ein elektrisches Haushaltsgerät, insbesondere eine Geschirrspülmschine |
DE102006037494B4 (de) | 2006-08-10 | 2008-07-24 | Emz-Hanauer Gmbh & Co. Kgaa | Türschließvorrichtung für ein elektrisches Haushaltsgerät, insbesondere eine Geschirrspülmschine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109674426A (zh) * | 2019-02-22 | 2019-04-26 | 珠海格力电器股份有限公司 | 家用电器门锁组件及洗碗机 |
CN109674426B (zh) * | 2019-02-22 | 2024-07-09 | 珠海格力电器股份有限公司 | 家用电器门锁组件及洗碗机 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20121214 |